410 Notice of two Marmots. [No. 137. 



eighth to one and a quarter long : wool wavy, a third less long, not 

 found on the body below, or tail, or head, or limbs. Hair triannulate 

 from the base, with dusky brown and yellow (of a canescent rather 

 than rufescent cast) and black, the last ring much the shortest, and 

 found only on the upper surface of the body : the woolly fur biannulate 

 only, wanting the dark tips of the hairs. General external hue, a sub- 

 rufescent cat-grey : beneath from chin to vent yellow : limbs and 

 cheeks the same, but deeper toned and inclining to rufous : bridge of 

 nose and last two inches of tail, dark brown. Twenty-two to twenty- 

 four inches from snout to vent : tail with the hair, five and a half to 

 six and a quarter. Palm and digits (exclusive of the nails) three and 

 a quarter : Planta, ditto ditto, three and six-sixteenths. Sexes alike, 

 and of nearly equal size. 



Habitat Tibet. Social and gregarious. 



2. Arctomys ffemachalanus, Mihi, Structure typical, but the digits 

 furnished with a basal membrane. Tail exceeding a third of the length 

 of the animal. Molars five-four, the firs tin upper jaw as in the last : 

 the rest transverse and having their broad crowns sulcated round a 

 horse-shoe ridge, in lower jaw cupped between four tubercles placed at 

 the angles of each tooth. Pelage softer and fuller than in the above, 

 of two sorts, or hair and wool, and nearly in equal quantities. Hairs 

 straight, fine, elastic, and about one inch long : wool wavy and two- 

 thirds only the length of the hair. Both hair and wool triannulate 

 from the base with dusky, rufescent, and black, and nearly in equal pro- 

 portions, the dark tips being ample wherever they exist, that is, on all 

 the superior surface of the body and head, but not on the belly, nor 

 limbs, nor sides of the head, nor ears ; general colour dark grey with a 

 full rufous tinge which is rusty and almost ocherous red on the sides 

 of the head, ears, and limbs, especially in summer. Bridge of nose and 

 last inch of the tail dusky brown. Head ancl body above strongly 

 mixed with black, which hue equals or exceeds the pale one on those 

 parts. From snout to rump twelve to thirteen inches. Tail five and 

 a quarter to five and a half. Palma, less than the nails, two and three- 

 sixteenths. Planta, ditto ditto, two and fifteen-sixteenths. Sexes alike, 

 and of nearly equal size. 



Habitat the Himalaya with the Bhote pergannahs or Cachar in the 

 immediate vicinity of the snows. Social and gregarious. 



